1. Similar to the muffin top the Hungry Jack effect occurs when a person, usually female wears clothes that obviously fit a starving Indonesian orphan. The result is a large lump of fat hanging precariously over the clothing. This phenomenon is called a Hungry Jack because the fat explosion resembles a pack of half-opened biscuits. Both fat/dough are trying to escape their containers with no prevail. Hungry Jacks of world: please cover up your mounds of excess flesh. Unless your aim is to frighten small children and large dogs, you serve no purpose.

Dumb Girl: OMG I weigh 200 lbs but no one can tell in my size 0 pants from Abercrombie!

Smart Girl (aka me): Actually you look like a busted can of Hungry Jack biscuits lard ass. It's called treadmill. Use it!

adj- A word stated when passing a fat girl, insinuating that she spends a lot of time eating in hungry jacks restaurants. Normally said in an emphatic tone of voice, however this depends on the circumstances of the sighting. it must always be said loud when you see GP's bird!

Fast-food chain, the Burger King of Australia. Upon HJ's opening, there was a small business with the name 'Burger King'. He was offered a lot of money for the rights to the name but did not relent, and shortly after the opening of the chain he went out of business.

Hungry Jack's is the bogan version of McDonalds, much like Pepsi is to Coke.